Feed-reversing device.



l. BECKER.

FEED REVERSING DEVICE.

APPLICATION FILED APR. 2!. i910. 1,199,337. PatentedSept. 26, 1916.

2 SHEETSSHEET 1.

witness es Inventor.-

Johnlieciaer,

2 SHEETS-SHEET 2 1. BECKER. FEED REVERSINGDEVICE.

APPLICATION FILED APR. 21, IQIO.

Patented Sept. 26,1916.

llllll N l "Nil Iii 3Q 1} w "HM witnesses Ifiventor:

' 5 am W 7 tlt z s.

JOHN BECKER, OF HYDE PARK, MASSACHUSETTS.

EEED-EEvEEsmG DEVICE.

Specification of Letters Patent.

Application filed April 21, 1910. Serial No. 556,719.

To all whom it may concern Be it known that I, JOHN BECKER, a citizen ofthe United States, and a resident of Hyde Park, in the county of Norfolkand State of Massachusetts, have invented an Improvement inFeed-Reversing Devices, of which the following description, inconnection with the accompanying drawings, is a specification, likeletters on the drawings representing like parts.

This invention is an improvement in feed reversing devices and forpurposes of illustration is shown herein as applied to a verticalmilling machine, although it will be understood that it may be readilyapplied to other uses.

The character of the invention may be best understood by reference tothe following description of an illustrative embodiment thereof shown inthe accompanying drawings, wherein:

Figure 1 is a front elevation of a vertical milling machine equippedwith a feed reversing device embodying my invention; Fig. 2, on anenlarged scale, shows usual driving gears for the work table; Fig. 3, onan enlarged scale, is a front elevation of the feed reversing deviceshown in Fig. 1; Fig. 4 is a plan of the mechanism shown in Fig. 3; Fig.5 is a horizontal section taken on line 55 of Fig. 3; Fig. 6 is asection taken on line 66 of Fig. 4; Fig. 7 is a section taken on line 77of Fig. 3; and Fig. 8 is a section taken on line 88 of Fig. 3.

Referring to the drawings, 1 represents a column-like base carrying avertically adjustable knee 3 supporting a table base 5 carrying a worktable 7. Said base 1 extends upwardly curving forwardly to form abearing 9 receiving a vertical spindle 11 having a pulley 12 which maybe driven by a belt in the usual manner.

The table 7 may be fed by a feed screw shaft'13 (Fig. 2) carrying a spurgear 15 driven by a pinion 17 loose on a short countershaft 19 journaledin bearings 21 secured to the work table base 5. The pinion 17 isprovided with a hub rotative in the bearing 21 and having at itsopposite end a bevel pinion 23. This pinion may be connected to theshaft 19 by a spool clutch 25 splined to the shaft 19 to drive the feedscrew shaft 13 from the shaft 19 in one direction. To drive the feedscrew shaft 13 in an opposite direction there is provided a bevel pinion27 loosely mounted on the shaft 19 meshing with an intermediate pinion29 which also meshes with the bevel pinion 23. When the spool clutch isslid into engagement with the bevel pinion 27 the drive from the shaft19 will be through the bevel pinion 27, the intermediate pinion 29 andthe bevel pinion 23 to the feed screw shaft 13 thereby rotating thelatter in an opposite direction. The spool clutch may be shifted toconnect one or the other of the bevel pinions 23 and 27 to the shaft 19by a rocking arm 31 fulcrumed on a pin 33 and having a yoke end receivedby an annular groove in said spool clutch.

The parts described above may be of usual construction and are describedherein as illustrative of a use of my improved feed reversing devicewhich I will now describe.

This feed reversing device is utilized herein to rock the arm 31 andshift the spool clutch as described, and comprises a sliding rod 35 i(Fig. 3) having at one end a reduced, rounded portion adapted to slidein a bracket 37 secured to the work table base 5 in any suitable manner.The opposite end of said rod is guided by a bracket 39 secured to saidbase 5. To detachably connect the rounded end of said rod 35 to thespool clutch controlling arm 31 said rod herein is provided with a head41 having a transverse groove 43 in the under side thereof adapted toreceive a pin 45 projecting upwardly from a handle arm 46 fulcrumed on apin 46*, said arm 46 being connected to said clutch arm 31 by a pin 46on the latter received by a fork 46 on said handle arm.

Patented Sept. 26, 1916.

In accordance with my invention the rod face of said work table base. Torock said 35 is moved longitudinally in said guides 37 slid to variouspositions of adjustment in T slot 67 in the face of the work'table 7 andbe held in its positions of adjustment by ,a suitablebolt 69; Theotherarm 51 is adapt.- ed to be engaged bya roller 71 similar and similarlymountedto, that described, with this exception, that. the roller 71 is,set farther from .the fails of the wolk table in order that it -may wipeacross the arm 51 without engagement With the arm 59.

It willv be. apparent that as the .Work table is fed tothe right of Fig,3 the dogroller 71 will wipe across the backof thearm 61, and rock thedisk in a clockwise direction and when the table is travelinginan.opposite direction the roller v68,,will wipe across the back of thearm 59 and rock,the disk 55' in an opposite or contra-clockwisevdirection. These rocking movements of the disk55narle utilized toenergize means for shiftingthe rod 35 which I will now. describe Thismeans comprises a plungerFSjadapted ,to slide longitudinally .in a bossbracket .75 se; cured to the face of thewo-rk table base, said plungerbeing prevented, from rotative movement therein by .a spline, .77 (Fig.5) entered into a longitudinal keyway in said plunger. Theplunger isprovided witha wedge ,or. substantially conical nose;. 79 ,hav; ing aflattened face .81 for engagemenhwith a roller 83 carried by the disk,55. The plunger is normally pressed outward into engagement with saidroller by. a helical spring 85 havingone .end containedwithin saidplunger and its opposite;.endcontained in a plug 87 threadedintothebracket .7 5 and provided with a disk handle 89 having a knurledperiphery. Byturning said handle the plug 87 will, be moved in or outofthe bracket 7 5 more or less to yary the tension. of the spring 85asdesired.

In operation it may be supposed that the tongue 47 is rocked .'n acontra-clockwisedirection and that the rod 35 is moved. to shift thespool clutch to connect the bevel; pinion .27 to the.shaft,19andtherebytransmitthe drive to the feed screw shaft 13 through theintermediate pinion. .29- and the pinionv 23. The sl1aft19. beingcontinuously rotated this will cause the work-table,. for example tofeed toward the right of Fig.3. I lVhenthe tongue disk 55.is' thusrocked. in a contraclockwise direction to. the position. described thedisk roller will engage.thelower, .periphery of the cone end of theplunger 73 and the plunger will be pressed outwardly 61, of hardenedsteel or other herein in the form ofva thereto from its bracket by thespring contained therein. After the roller dog 71 has been adjusted onthe table to a point where it is desired to change the direction. offeed, the table byits travel eventually will cause the roller 71 toengage the back of the arm 61 and .rock, the disk 55 in a clockwisedirection. The initial rocking of the disk 55 in this direction, firstwill cause the roller .83 to travel from the lower periphery of the cone7 9 to the apex or high point thereof and thereby press the plunger intoits bracket and compress thespring85a When the dog roller -7 1 hassubsequently rocked the disk 55 sci-that the diski, roller .83 isslightly .beyond the apexof, theplunger ,coneend. the rocking I of the,disk. 55 will; no longer be effective to press the plunger into itsbracket ment of the disk 55 will'ca-use its tongues? to engage-,the,.eccentr,ic. lug a9 and slidethe rod 35lto the. leftrof. Fig.3thereby shifting the spooLclutch 25.;fr'om. engagement. with the. bevelpinion 23. As ares ult thedirec tion of rotation .of. the table feedscrewshaft l3 willbe reversed antlthetable willco-mmence to feedito the,left-gof Fig. 3. When said table. has traveled a sufl cient distance tobring the dog roller 68 into engagement with the other .diskarm 59, saidroller will wipe across theback ofv the latter and rock the disk55, in acontra-clockwise direction,

thereby causing the roller 83 to travel from the upper edgeoftheperiphery of the, cone end of the, plunger .73 down to the apexthereof and as soon as the roller 83 passes beyond said apex the.downward incline, of

thecone end of said plunger will jbeefiective to rock the disk, 5501i ina contra-clockwise directionwith a sharp, quick movement and cause thedisk tongue L? to. engage the eccentriclug, 51 andshift therod to. theright of Fig. 3 and again connect the-bevel pinion 27 to theshaft19. ,Itwill be apparent that by repeated operations such as described, the

direction. of feed thus may be automatically indefinitely reversed.

The, tongue. disk. and. spring; pressed plunger. constructionv describedare found to be very effective. since, .among other reasons, the springof the plungernotonly throws the spool into engagement with one oranother of the clutch faces of the pinions 27' f, to

until the spool clutch is again shifted to change the direction oftravel of the table. Having described the construction and operation ofthe mechanism whereby the direction of feed of the table isautomaticallychanged, I will now describe adjustments and means forthrowing the clutch into its mid position to stop the feed of the table.To move the spool clutch to this mid position the plunger should bepressed in out of engagement with the disk roller 83 and held in thisposition. As shown herein this may be effected by a plunger locking arm91 (Fig. 6) pivoted to the top of the bracket 7 5 and having a portion93 adapted to enter slots 95 and 97 extending transversely of saidbracket and plunger. It will be apparent that when the plunger ispressed in sufiiciently to bring the slots 95 and 97 into registrationthe portion 93 of the arm 91 may be entered into said slots therebysecurely holding the plunger out of engagement with the disk roller 83.

It may be supposed that it is desired to arrest the table at the end ofa feed toward the left in Fig. 3. When the roller 63 engages the diskarm 59 the disk will be rocked in a contra-clockwise direction but sincethe plunger 73 is out of engagement with the disk roller 83 the springof the. plunger will not be energized by said movement and the plungerwill not be effective to further rock the disk in a contra-clockwisedirection, or, in other words, the rocking of the disk 55 under theseconditions is effected merely by the direct engagement of the roller 63therewith. With the eccentric lug 51 in the position shown in Fig. 3 theengagement of the tongue 47 therewith as occasioned by the rocking ofthe disk 55 by means of the roller 63 would not be sufficient to throwthe spool clutch to its mid position. In order that this movement may,

be effective to bring said clutch to its mid position the eccentric 51is turned by its handle 53 about in a contra-clockwise direction. Thiswill in efiect adjust the lug longitudinally of the rod 35 toward saidtongue and when the disk 55 is rocked by the roller 63 as described, therocking movement transmitted to said disk then will be sufficient toshift the rod 35 and cause the clutch to arrive at its mid position, outof engagement with either of the bevel pinions 23 and 27, and therotation of the shaft 19 will be rendered inefiective.

To insure the arrest of the spool clutch the top of the rod guide 37referred to. When the rod 35 is shifted as just described the wedge endof the finger 99 will seat itself into said depression and will therebyhold the spool clutch in its mid position.

In a similar manner if it is desired to arrest the feed of the table atthe end of a feed to the right of Fig. 3, the eccentric lug 4:9 isrocked in a clockwise direction substantially 90 and the clutch will bethrust to its mid position by the engagement of the dog roller with thedisk arm 61 in a manner similar to that just described when the table isfeeding to the left of Fig. 3.

To prevent accidental engagement of the spool clutch with either of thebevel pinions when the table is not being fed, the rod 35 may be lockedto prevent longitudinal movement thereof. To this end the roundedportion of the rod 35 may be provided with a transverse groove 105 (Fig.8) adapted to receive a thick portion 107 of a lock pin 109. To permitthe reciprocation of said rod this pin may be pulled upwardly to bring are duced end 111 of said pin opposite to said groove 105 said pin beingheld in its position by a humped spring 113.

I n I t In some instances 1t may be deslred to feed the table in onedirection, reverse the feed, and then automatically stop the table. IFor example, sometimes it is desirable to make a fairly heavy cut ofsubstantial depth in the stock, while feeding in one direction, and thenmake a light finishing cut when feeding in the opposite direction. Underthe strain of making the initial heavy cut the tool will be caused tospring more or less, so that when the subsequent feed is made in theopposite direction the tool will spring back to its normal position andwill make the light finishing out without further adjustment.

The feed reversing device described lends itself advantageously to suchwork since it may be set to feed the table in one direction,automatically reverse the feed, and automatically stop without furtherattention of the operative other than to start the initial feed.

For example, it may be supposed that it is desired to feed the tabletoward the left of Fig. 3, reverse the feed to the right of Fig. 3, andthen automatically stop at the end of said feed. To efiect this seriesof op erations, first the handle 53 of the eccentric lug 19 is turnedclockwise through an arc of about ninety degrees, to adjust the lug 49along the rod 35, to the right of Fig. 3 toward the depending disktongue 4:7. Then the clutch shift handle 46 is rocked to the left ofFig. 2. (the direction of desired table feed) to shift the spool 25 andcause the gear 23 to rotate with the shaft 19 and thereby cause thetable to commence to travel toward the left of Fig. 3. Eventually theroller dog 63 will engage the disk arm 59 and rock the disk in acontra-clockwise direct on, causmgthe d1sk'roller 83 to pass from theupper edge of the base of the cone end 79 to the ape'xthereof. This willdepress the plunger 7 3 against the resistance of its spring, until thed sk 55 is rocked suliioiently tobring. its roller 83 beyond the apex ofthe cone end 79 of said plunger, whereupon the previously energizedplunger spring will dischargeand project toward said disk55, and causethe roller 83 of the latter to pass from'th'e apex of the cone end 79toward the lower edge of the base of said cone end. This will furtherrock thedisk 55 and cause itstonguez i'f' to engage the eccentric lug51, shiftthe rod 35 to the right of F1gr3, and cause the spool clutch todisengage from the gear 23 and, engage the gear 27. This will reversethe feed of the the rod to the right onthe reversing of the feed, andthe previous adjustment of the eccentric lug 49 along said rod to theright thereof, brought said lug to a point adjacent the depending tongue47 of the disk 55. As a result, the rocking of said tongue on thepassingof the disk roller 83 from the lower edge of the base of the cone end 79 to the apex thereof causedsaid tongue toengage said eccentric lug 49and move the latter to shift the rod 35 to the left of Fig. 3, and movethe clutch spool to its mid position out of engagement with either ofthe bevel gears 23 Or 27 and as a result arrest the feed of the table.The disk will be prevented from over-rocking and throwing the clutchspool beyond its mid-position by the seating of the wedge end 101 of thespring finger 99 into the V depression in the elevation 103 of the rodguide 37, and the seating of the disk roller 83 in the slight depressionon the apex of the cone end 79.

Then the table has completed its travel to the left of Fig. 3, thetongue 47 has rocked to the right into engagement with the eccentric 51and remains in this position until on the return travel of the table tothe right of Fig. 3, the roller 71 engages the arm 61. Thus the tongueis a sufficient distance from the eccentric 49 to allow the roller 83 topass from the lower edge to the apex of the plunger 79, without'goingbeyond said apex. Of course the. roller 71 does not move'beyond the arm61 in this operation. I

Any number of reverse cuts and arrests, such as just described, may bemade without any other adjustment of the device than the means? shiftingof the handle to the le ft to start the clutch handle amt the" rightofsaid figure (the' direction of desired table feed),-

the enemy be ad to are right ofFig. 3,

automatically reversed, and automatically stopped While one embodimentof the invention has been'sel'ected for purposesof illustrating theinvention,it will beunderstood that various modifications may be madewithout departing from the scope ofthe' claims.

,l Vhat I clalm asnew *and de'sn-eto secure by LettersPatent 1s:-

1." A devieoftheclass described comprising, in combination, a worksupport; a rocklng member having oppojsltelyinclined arms, projectingtherefrom; 'dog's carried by said support and adaf'ted'jto engage' saidarms; a feed shift rod; anda spring pressed plungeradapted tolie-energized by the'rocking' of said member to 'shiftsaidrod'.

2. A' device of the'class" described comprising, in combination, 'awork: table; a"

feed shaft therefor; gears-loose on'the' latter; a shift clutch for'connecting one orthe ether of said gears to "said 'shaftfarodconnectedto said'clut'ch; spaced lugs on said rod; a rocklngmemberforengagementwith oneo-r another'of said lugs to shift'said rod;

"a spring"pressed plunger engaging said member pro'jection's 'on' saidmember 5' v and dogs on said tableIfOr rocking'sal'd memher inoppositedirections to erier 3;ize "saidplunger andca'use th'e 'latter"to rock said memb'erto shift saidclutch."

3. A feed reversingdevice comprising, in combination, a Work support{feeding means therefor; ajspriiigpressed plunger; rod

having lugs thereon; and a member moved by travel of said' support'tojenergize said 1 plunger and then engage one or another of said lugs"and shift said rod to reverse said feeding means.

i. A feed reversing device comprising, in combination, a worktable; ashaft; oppositely ret'ative feeding gears loose thereon a clutch forconnecting onefor'another of said gears to said shaft; clutch actuatingm.eans,'a rocking member; dogson said table" for rocking said member" onmovements ofsaid table; and eccentrics on said means for varying thethrow of said clutch. 5." A feed reversing device comprising, incombination, a wo'rk table; a basetlierefor; adjustable dogs on 'saidtable; feeding devices for said table; a rocking tongue disk 7 pivotedon said table'b aseya rod adapted to he slid in opposite 'directionsbythe en gagement'of the tongue of said disk there ing adapted to bepressed against the resistance of its spring on the travel of said diskroller on one incline of said Wedge and adapted to be effective to rocksaid disk, When said roller passes the high point of said Wedge, toslide said rod to actuate said feeding device and change the directionof feed of said table.

6. A feed reversing device comprising, in combination, a bed; a Worktable thereon; means for feeding said table relatively to said bed; aspring pressed plunger and a rocking member both mounted on said bed; afeed reversing clutch, said plunger and rocking member cooperating onrocking of said member by said table to shift said clutch and reversethe feed and locking means for preventing said plunger from cooperatingwith said rocking member.

7. A feed reversing device comprising, in combination, a support;feeding means therefor, including a shaft andgears oppositely rotativethereon; a clutch for connecting one or the other of said gears to saidshaft; a spring pressed plunger having a tapered end; a rocking memberformed to slide over said end, said member being rocked by the travel ofsaid support in one direction to and beyond the apex of said end toenergize said plunger and permit the latter further to rock said memberand shift said clutch from one of said gears to the other to reverse thefeed; and means for automatically stopping said rocking member at theapex of said plunger on the feed of the support in an oppositedirection'to shift said clutch out of engagement With said gears andthereby arrest the feed of said support.

8. A feed reversing device comprising, in combination, a support;feeding means therefor, including a shaft and gears oppositely rotativethereon; a clutch for connecting one or the other of said gears to saidshaft; a spring pressed plunger having a tapered end; means adapted topass over oppositely inclined surfaces of said tapered end, said meansbeing movable over both of said surfaces on the feed of said support inone direction to shift said clutch from one of said gears to the other,and said means being adapted to pass over but one of said surfaces toshift the clutch into. a neutral position out of engagement with both ofsaid gears to arrest said support on the completion of its feed in anopposite direction.

9. A feed reversing device comprising, in combination, a support;feeding means therefor including a shaft and gears oppositely rotativethereon; a clutch for connecting one or the other of said gears to saidshaft; a spring pressed plunger having a tapered end presenting opposedinclined surfaces; and a rocking member having a pore tion formed toride over said surfaces, said member being rocked by the travel of saidsupport over saidapex on the travel of said support'in one directionto'shift said clutch to reverse the feed, and said member being rockedto said apex on a subsequent feed of said support in an oppositedirection to shift said clutch to a position out of engagement with bothof said gears and thereby automatically arrest the feed.

10. A feed reversing device comprising, in combination, a support;feeding means therefor including a feed reversing clutch; and means forshifting said clutch comprising a member moved by said support on thetravel of the latter in one direction to reverse the feed thereof; andadjustable means adapted to be set at vvillto automatically limit themovement ofsaid member and permit the latter to shift said clutch to aposition to automatically arrest the feed of said support on thecompletion of the feed of the latter in an opposite direction, or be setto automatically reverse the feed.

11. A feed reversing device comprising, in combination, a support; abase therefor; feeding means for said support; and controlling means forsaid feeding means comprising a member pivotally mounted in said base; aspring pressed plunger adapted to be energized on the rocking of saidmember;

and adjustable means adapted to be set to permit said plunger to beenergized and discharged by said member on the travel of said support inone direction to reverse the feed, said adjustable means being adaptedto be set to automatically arrest said member in a position to energizebut prevent dis-f charge of said plunger on the travel of said table inan opposite direction to arrest, the feed of said table, or be set toautomatically reverse the feed. 1

12. A feed reversing device comprising, in combination, a bed; a tablethereon; dogs on said table; a member pivoted on said bed and adapted tobe rocked by the engagement of one or the other of said dogs therewith;a spring pressed plunger mounted on said bed adjacent said member, saidplunger having a tapered end adapted to be engaged by said member; a rodhaving lugs thereon adapted to be engaged by said member; a clutchadapted to be shifted by saidrod; a shaft and oppositely rotative gearsthereon adapted to be connected by said clutch to said shaft to reversethe feed of said table. 13. A feed reversing device comprising, incombination, a bed; a table thereon; a shaft; oppositely rotative gearson said shaft; a clutch for connecting one or the other of said gears tosaid shaft; and'controlling means for shifting said clutch comprising arod having lugs thereon, a rocking member pivoted to said bed and havinga tongue projecting bet een said lugs; a

spring pressed plunger mounted on said bed and dogs on said table foralternate engage ment with said member whereby to rock the latter,energize said plunger and permit the latter to discharge and furtherrock said member, slide said rod and shift said clutch to reverse thefeed.

14. A device of the class described comprising, in combination, asupport; means for feeding the same in opposite directions, andcontrolling means for said feeding means having automatic means forarresting said support after the latter has been fed in either directionand in a reverse direction.

15. A device of the class described comprising, in combination, asupport; means for feeding the same in opposite directions; andcontrolling means for said feeding meansincluding a spring pressedplunger and means caused by'said support to wipe over the end of saidplunger to energize the same, said meansbeing adapted-to then beactuated by said plunger to reverse the feed of said support, and meansto maintain said plunger in its energized position whereby the'feed isautomatically arrested.

16. A device-of the class described comprising, in combination, asupport; -means for feeding the same in'opposite directions; andcontrolling means 'for said feeding means including an element moved bysaid support in the course of travel of the latter, and'meansactuatedbysaid element for reversing the feed when in one position and adapted tobe adjusted to aposition to automatic'all'y arrest the feedwhen'actuated by said element.

"'17. A device of the class described comprising, in combination, asupport; 'means for feeding the same in opposite directions andcontrolling means 7 for said feeding means including a .rod; spaced,adjustable means on said rod, and actuating means interposed betweensaid adjustable means and adapted to be moved by said 'support'to engageone or another of said ad ustable means and shift said rod to reversethe feed, saidadjustable means being adapted tobe set in positionstoc'ause said rod to be moved to arrest the feed.

' 18. A device of the class described comprising, in combination, asupport; dogs thereon; feeding means for said support, and controllingmeans for said feeding means comprising a clutch and means intermediatesaid dogs and said clutch and adapted to be engaged by said dogs forshiftin said clutch, said intermediate means being constructedandarranged to permit said dogs to pass the same aftenbeing moved thereby.

19. A device of the class described comprising, in combination, asupport; dogs thereon; feeding means for said support, and controllingmeans for. said feeding means comprising a shiftable clutch, andarocking member engaged by said dogs to shift said clutch, said rockingmember being adapted to permit said dogs to wipe past the same afterbeing actuated thereby.

20. A device of the class described comprising, in combination, a bed; atable thereon; dogs on said table; feeding means for said table; andcontrolling means for said feeding means comprising a clutch, a springpressed plunger mounted on said bed and having a tapered end, a rockingmember having a portion adapted to move over said tapered end, saidmember having a pair of arms, one or another of the latter being adaptedto be engaged by said dogs to rock said member to energize said plungerand then render said plunger effective to further rock said member and{shift said clutch to reversethe feed.

21. A feed reversing device comprising,

in combination, a bed 5; a table 7 thereon;

dogs 63 and 71 on said table; a feed screw 13 for said table; a clutch;means controlled thereby for changing the direction of rotation of saidscrew; a rod 35 connected to said clutch and mounted to slide on saidbed;

lugs 49 and 51 on said rod; a member 55 pivoted on said bed'and having atongue d7 projecting between said lugs; arms 59 and (don said memberadapted to be engaged by said dogs and a spring pressed plunger-73-co6perating with said member 55 for shifting said clutchto controlthe feed. 22. A feed reversing device comprising in combination, arocking member. with provision for operating the same by movement of atable; a clutch shifting member actuated by said rocking member andhaving elements thereon adjustable to different positions for reversingor arrestingthe feed; and means for assisting the operation of saidrocking member. I

23. A feed reversing device comprising, in

combination, a clutch shifting member, a

rocking member having provision for pivotal connectionwith a table basefor transmitting movement from the table to said clutch shifting memberon the engagement of table feed dogs therewith, and meansrcooperatingwith said transmitting member for arresting or allowing continuation ofthe movement thereof. 3

In testimony whereof, I have signed my nameto this specification, in thepresence of two subscribing witnesses.

i JOHN BECKER.

Witnesses:

HENRY T. \Vi LiAus, RoBnR'r H. KAMMLER.

Gopies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. (3.

